Bobbin for use in spinning or weaving



July 2, 1946. c. VAN D EVENTER BOBBIN FOR USE IN SPINNING OR WEAVING Filed Oct. 11, 1943 Patented July 2, 1946 2,403,417 BOBBIN FOR USE IN SPINNING OR WEAVING Christopher Van Deventer, Knoxville, Tenn, as-

signor to National Plastics, Inc.,

a corporation of Tennessee Tenn.,

Knoxville,

Application October 11, 1943, Serial No. 505,756 Claims. (Cl. 242-120) The present invention relates to bobbins, quills and the like for use in spinning and weaving. In describing the present invention I use the term bobbin in a broad sense to refer to bobbins and similar devices, whatever they are named, as used in spinning and weaving in a textile indust y. The present invention is particularly directed to providing means whereby to make the bobbin 9, more useful and longelived part of the spinning and weaving machinery. According to present practice the bobbins are made generally of wood and the wood, under use, becomes rough due to the grain thereof and then fine splinters are worn off of the bobbin and catch in the thread and interfere with the uniformity of weave and spin. Moreover the continuous wearing away of the splinters soon reduces the length of the bobbin because the wearing away takes place at the most rapid rate at the tip of the bobbin.

According .to the present invention I propose to prepare the bobbin so that it is less apt to splinter due to wear.

Also, in accordance with my invention, I provide the tip of thebobbin with adequate additional wear resistance to eliminate danger of the tip being'worn out faster than the rest of the bobbin. The invention is applicable to old bobbins as a means of restoring them to a condition equivalent to new, and may be also applied to bobbins before they have ever been used.

Figure 8 is a sectional view taken on the line 8-8 of Figure 3.

Referring now in detail to the drawing, the showing in Figure 1 is of a standard known form of bobbin H) which has a mounting base I I thereon. These bobbins are hollow as indicated and are generally constructed of wood. In use the wood fibers at the tip l2 of the bobbin wear away quite rapidly and the fine splinters that come ofl the tip catch the thread and thus interfere with uniformity of weave and spin. The amount of material worn oil has been indicated roughly by the dotted lines at IS in Figure 1 so that it is apparent that the utility of the bobbin i0 is seriously impaired by this reduction in length. Fur thermore, the amount of material in the form of fine splinters that has been ground away to provide a hazard to the thread is quite substantial.

In accordance with my invention I may take the worn bobbin I 0 and restore it to its original length and serviceability. in fact to a greater serviceability, by turning down the tip portion thereof to provide a shoulder it with a reduced tip i5 as shown in Figure 3. Desirably this re- 5 duced tip is also provided with an annular groove The features and advantages of the present I invention will appear more fully as the description proceeds, reference being made to 'the accompanying drawing wherein a preferred form of the invention is shown. It is to be understood however that the drawing and description are illustrative only and are not to be taken as limiting the invention except insofar as it is limited by the claims.

. ing the twist or other characteristics of thread used in spinning and weaving; and

it. In order to restore the length of the bobbin I provide a shell 51 of plastic material which is molded from a suitable plastic compound into the shape indicated in Figure 3, that is, substantially cup-shape, with an opening 48 in the base that is substantially the same diameter as the interior opening of the bobbin at the tip.

The shell is provided with at least one annular rib ill on the interior thereof, which rib is adapted to engage the groove It provided on the reduced part l5 of the bobbin. One or more splines 20 on the inner surface of the shell will prevent it from turning on the tip i5. I do not limit myself to this specific fastening as I may cement or bond the shell to the tip or crimp the shell material into the quill tip. For the purpose of making the tip shells I1 I may use thermosetting plastic compounds such as phenols and urea compounds or I may use theremoplastic materials such as acetates. The material, whether thermosetting 0r thermoplastic, must be such that it will readily take color and will not be easily worn by continuous engagement with the thread. The shell tip I! is desirably fastened with a suitable adhesive in addition to the holding efiort exerted by the rib l9 and the groove l6. If the right type of plastic composition is used additional holding can be obtained by using a pointed punch and forcing the plastic material into the reduced wooden tip l5.

The shell tip I1 i of course made of such diameter that its exterior diameter is equal to or slightly less than the diameter of the tip at the shoulder ll. As a further means of protecting 4 the bobbin against deterioration I prefer to treat the bobbin with a plastic composition in such way as to thoroughly impregnate the wood from the inside out. This reduces the splintering not only at the tip but throughout the body of the bobbin. In order to impregnate the bobbin I preferably apply the plastic in fluid condition either to the interior or the exterior under pressure. Then I establish a vacuum on the exterior of the bobbin if the material is applied to the interior thereof so as to cause the fluid plastic material to be forced through the air cells in the wood without breaking up the cell structure. In other words the liquid plastic material is caused to penetrate into the wood in much the same manner as water wets the wood, the pressure on one side and the vacuum on the other side being the means for speeding up the process of soaking the wood with the plastic material. When the bobbins are being made new it is advantageou to utilize a plastic material which is similar in characteristics to the material of which the tips are made and to apply the tips in such a way as to take advantage of the plastic material impregnated in the wood to adhere the tip to the reduced end ii of the bobbin.

Referring now to Figures 4 to 7, inclusive, I

have illustrated in these figures several separate bobbins, the tips of which are lined to indicate different colors. For example, the tip in Figure 4 is red, the tip in Figure 5 is blue, the tip in Figure 6 is green and the tip in Figure '1 is yellow. These indications show how the plastic shell tip I! may be distinctively colored so as to identify certain characteristics of the thread thereon throughout a spinning or weaving .process. It is possible to carry the idea to the spindles as well as the bobbins so that a certain twist may be followed from the spindles through the weaving mechanism into the cloth. It is essential of course that the coloring be a part of the shell itself and not a mere coating thereon because of the wear to which the tip of the bobbin is subjected. The coating would soon be destroyed, but owing to the nature of the plastic tip H the coloring of the tips will last as long as the tips themselves and theywill last as long as the 4 bobbin. Furthermore. if a tip happens to come loose repair can be made by replacing the tip without the loss of the entire bobbin.

From the foregoing description it is believed that the construction and operation of the present invention will be readily apparent to those skilled in this art.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A bobbin for use in spinning and weaving, having a wood body and a tip thereof comprising a plastic shell covering the end of the bobbin and adhered thereto, the bobbin body having a reduced end fitting in the shell, the reduced end having a recess in its periphery and the shell having a projection extending into the recess.

2. A bobbin for use in spinning and weaving, having a wood body and a tip therefor comprising a plastic shell covering the end of the bobbin and adhered thereto, the bobbin body having a reduced end fitting in the shell, the reduced end having a recess in its periphery and the shell having a projection extending into the recess, the recess and projection being annular about the end and tip.

3. A bobbin for use in spinning and weaving, having a wood body and tip therefor comprising a shell of thermosetting plastic composition covering the end of the bobbin and adhered thereto, the shell having projecting members extending into the wooden body to prevent rota.- tion and removal of the shell.

4. A bobbin for use in spinning and weaving. having a wood body and a tip therefor comprising a plastic shell covering the end of the bobbin and adhered thereto, the body itself being impregnated with a plastic composition.

5. A bobbin for use in spinning and weaving, having a wood body and a tip therefor comprising a plastic shell covering the end of the bobbin and adhered thereto, the plastic shell being rounded, the body having a reduced end to enter the shell and having a shoulder abutting the end of the shell and of an exterior diameter as large as the exterior shell diameter where they meet, the body of the bobbin being impregnated with a plastic composition of the same nature as the shell.

Cl-IRISTOPI-IER VAN DEVEN'I'ER. 

